CN209196400U - A kind of high-density polytene pipeline liner reparation structure - Google Patents
A kind of high-density polytene pipeline liner reparation structure Download PDFInfo
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- CN209196400U CN209196400U CN201821898784.4U CN201821898784U CN209196400U CN 209196400 U CN209196400 U CN 209196400U CN 201821898784 U CN201821898784 U CN 201821898784U CN 209196400 U CN209196400 U CN 209196400U
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Abstract
The utility model discloses a kind of high-density polytene pipeline liners to repair structure, including pipeline section to be repaired, liner pipeline section and surrounding layer, inner wall of the outside wall surface of liner pipeline section one end close to pipeline section to be repaired, and it is axially extending along pipeline section to be repaired, it is connected between the liner pipeline section by interconnecting piece, filled layer, the cut surface welding of surrounding layer and pipeline section to be repaired are equipped between the surrounding layer and liner pipeline section.The utility model is improved and has been innovated to original pipe rehabilitation technology, thoroughly solve pipeline through reparation after bearing capacity is poor, inner wall is perishable, be easy to fall off the problems such as.
Description
Technical field
The utility model belongs to pipe rehabilitation technology field, is related to a kind of high-density polytene pipeline liner reparation structure.
Background technique
The pipelines, especially oil field oil pipeline such as many petrochemical industries of recent domestic, heating and supplying water, due to internal defeated
It send in medium containing compositions such as a large amount of hydrogen sulfide, strong acid and strong bases, causes inner wall of the pipe seriously corroded, or even situations such as perforation.Office
Portion's maintenance can't resolve root problem, or even bury serious security risk.
In old pipeline Treatment process development over the past several decades, industry has used many different modes to solve pipeline
Inner wall corrosion problem, such as it is exactly to form erosion resistant coating using coating in inner wall of the pipe, but its erosion resistant coating is resistance to that HCC wind, which send squeezing and coating technology,
Corrosion life is short, pressure-bearing is poor, is easy to fall off, and even can block pipeline when serious causes to scrap；There is the side for more renewing pipeline again
Method the disadvantages of there are at high cost, difficulty is big, long in time limit, therefore, it is a kind of efficiently, low cost, the old of pipeline service life can be extended
Pipeline Treatment process is urgently studied.
Summary of the invention
To solve the above problems, the utility model provides a kind of high-density polytene pipeline liner reparation structure.To original
Pipe rehabilitation technology is improved and has been innovated, and thoroughly solving pipeline, bearing capacity is poor, inner wall is perishable after repairing, holds
The problems such as easy to fall off.
The utility model is to be achieved through the following technical solutions:
A kind of high-density polytene pipeline liner reparation structure, including pipeline section to be repaired, liner pipeline section and surrounding layer；
Inner wall of the outside wall surface of liner pipeline section one end close to pipeline section to be repaired, and, institute axially extending along pipeline section to be repaired
It states and is connected between liner pipeline section by interconnecting piece；
Filled layer, the cut surface welding of surrounding layer and pipeline section to be repaired are equipped between the surrounding layer and liner pipeline section.
Further, the liner pipeline section is high density polyethylene pipe.
Further, the filled layer is filled by cement mortar.
Further, the surrounding layer includes outside steel pipe and reduced pipe, and the cut end of the pipeline section to be repaired welds reduced pipe
Slot end, the wide mouth part of the reduced pipe and outside steel pipe weld.
Further, the whole steel pipe socket of the outside steel pipe is welded in outside the interconnecting piece.
Further, the interconnecting piece includes the electric melting sleeve for being set in two liner connection between pipe sections.
Further, the surrounding layer includes steel bushing pipe bend and reduced pipe, and the cut end of the pipeline section to be repaired welds reducing
The slot end of pipe, the wide mouth part and steel sleeve elbow welding of the reduced pipe.
Further, the interconnecting piece includes elbow and the electric melting sleeve for being set in elbow both ends Yu liner connection between pipe sections.
Further, the elbow is high density polyethylene (HDPE) elbow.
Compared with prior art, the utility model has technical effect beneficial below:
1, fabulous using high density polyethylene pipe (HTPO tubing) chemical stability, the factors such as general acid, alkali all will not
So that it is corroded or is damaged, bacterium, microorganism or fouling will not be bred and got rusty, tubing itself is nontoxic, and wearability is strong, frictional resistance
It is small.
2, it is filled using high strength cement mortar material, high-intensitive pressure-bearing guarantee can be provided after solidification for internal lining pipe.
3, outside steel pipe is socketed welding using the whole section of steel pipe that thickness is greater than former pipeline, provides secondary pressure-bearing for internal lining pipe and protects
Barrier and exterior protection.
4, it is an entirety after electric melting sleeve and the welding of both ends internal lining pipe, eliminates the easy of conventional method and loosen and easily-deformable wind
Danger, stability are extremely strong.
Detailed description of the invention
Fig. 1 is the sectional view of one structure of the utility model embodiment；
Fig. 2 is the sectional view of two structure of the utility model embodiment；
Wherein, 1 is pipeline section to be repaired, and 2 be liner pipeline section, and 3 be reduced pipe, and 4 be outside steel pipe, and 5 be electric melting sleeve, and 6 be to fill out
Layer is filled, 7 be steel bushing pipe bend, and 8 be interconnecting piece, and 9 be surrounding layer, and 10 be elbow.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, it is described be explanation to the utility model without
It is to limit.
Specific embodiment is given below.
Embodiment one:
As shown in Figure 1, a kind of high-density polytene pipeline liner repairs structure, including pipeline section to be repaired 1,2 and of liner pipeline section
Surrounding layer 9；The outside wall surface of described 2 one end of liner pipeline section close to pipeline section 1 to be repaired inner wall, and it is axially extending along pipeline section 1 to be repaired,
It is connected between the liner pipeline section 2 by interconnecting piece 8；Filled layer 6, surrounding layer 9 are equipped between the surrounding layer 9 and liner pipeline section 2
It is welded with the cut surface of pipeline section 1 to be repaired.The liner pipeline section 2 is high density polyethylene pipe.The filled layer 6 is filled out by cement mortar
It fills.The surrounding layer 9 includes outside steel pipe 4 and reduced pipe 3, the slot of the cut end welding reduced pipe 3 of the pipeline section 1 to be repaired
End, the wide mouth part and outside steel pipe 4 of the reduced pipe 3 weld.The socket of the outside steel pipe 4 whole steel pipe is welded in the interconnecting piece
Outside 8.The interconnecting piece 8 includes the electric melting sleeve 5 for being set in two 2 junctions of liner pipeline section.
Embodiment two:
As shown in Fig. 2, a kind of high-density polytene pipeline liner repairs structure, including pipeline section to be repaired 1,2 and of liner pipeline section
Surrounding layer 9；The outside wall surface of described 2 one end of liner pipeline section close to pipeline section 1 to be repaired inner wall, and it is axially extending along pipeline section 1 to be repaired,
It is connected between the liner pipeline section 2 by interconnecting piece 8；Filled layer 6, surrounding layer 9 are equipped between the surrounding layer 9 and liner pipeline section 2
It is welded with the cut surface of pipeline section 1 to be repaired.The liner pipeline section 2 is high density polyethylene pipe.The filled layer 6 is filled out by cement mortar
It fills.The surrounding layer 9 includes steel bushing pipe bend 7 and reduced pipe 3, the slot of the cut end welding reduced pipe 3 of the pipeline section 1 to be repaired
End, the wide mouth part and steel bushing pipe bend 7 of the reduced pipe 3 weld.The interconnecting piece 8 includes elbow 10 and is set in 10 liang of elbow
The electric melting sleeve 5 at end and 2 junction of liner pipeline section.The elbow 10 is high density polyethylene (HDPE) elbow.
Illustrate the forming method of pipeline repairing structure in the embodiments of the present invention one and embodiment two below:
Pipeline high density polyethylene pipe inner lining repairing technique is that (high density is poly- using the equal HTPO of outer diameter and internal diameter of the pipeline
Ethylene) pipe, the temporary reduction of its diameter is made by texturing machine or undergauge equipment, Target pipe is penetrated by dragger,
Then internal lining pipe self-characteristic is restored to original diameter, so that it is risen and is attached on the inner wall of pipeline, closely matches with Target pipe
It closes, one kind " tube-in-tube " composite construction that the mechanical performance of formation antiseptic property and former pipeline is combined into one.
Technology process: inserting tube hunting-selection construction section-excavation construction operation hole-pipeline inner wall washing derusting-is highly dense
Spend polyethylene pipe sweat soldering-high density polyethylene pipe line pressure testing inspection-high density polyethylene pipe liner-high-density polyethylene
Connect outside weld connection-pressure testing operation-operation hole backfill in alkene diameter recovery-all fronts.
1, first with pipeline detector, the ginseng such as detailed buried depth, trend, elbow, threeway is carried out to original buried pipeline section
Number positioning, and plant flag and make marks on ground, important evidence is provided to next construction segmentation, excavation.
2, in conjunction with drawing and testing result, segmentation is required according to on-site actual situations and technique and is excavated at each section of both ends
Operation hole.It excavates and uses hand excavation's mode, the size dimension of working pit: 10m × 3m × 2m.Cutting depth is with low outlet pipe bottom
50cm is standard, if any special circumstances, can redefine operation pit-size and shape.Antiseepage film is laid in operating pit, is avoided clear
Greasy dirt and raffinate out pollutes surrounding enviroment.
3, whole release, pipeline purging are carried out to pipeline, pipeline purging using the disconnected pipe of cold cutting technique, is managed and filled at interior 30cm after the completion
Butter wall separates the pernicious gas in pipe, welds steel concentric reducer variable diameter.It needs individually to disconnect pipeline at pipeline elbow,
And the corresponding HTPO bend pipe tools of connection are made, to reach optimal liner effect.
4, dragger is taken to draw pipe cleaner pigging
(1) dragger is fixed respectively in advance at the both ends of pigging construction section, guided wirerope one end with R-T unit
To the other end, pulled by wirerope and remove tumor device in pipe, by pipeline overlap and burr remove and clear out outside pipe；Until nothing in pipe
Until the sewage of accumulation, the dregs of fat, sundries.
(2) pulling force is paid attention in pigging process, stop when if lineoutofservice signal pull being more than scheduled pulling force during snaking
Construction can continue to construct after analysis reason processing；
(3) to former pipeline cleaning, except reaching inner wall substantially without dirt, no-sundries, without sharp burrs, reach liner and apply after gold-plating
The condition of work.
5, high density polyethylene pipe welds
The welding of HTPO tubing welds method using heat-melting butt-joint, and partial tube, elbow are connected using electric smelting automatic welding.Weldering
The intensity of weld bond after connecing is equal to or more than high density polyethylene pipe bulk strength.High density polyethylene pipe weld length should be than original
The more 20m-30m of pipeline section length are with reserved pipeline section docking.
The principle of sweat soldering: high density polyethylene pipe is to be obtained using heat-proof polythene (PERT) resin through extrusion molding
It arrives.If polyvinyl resin molecule can be interconnected to longer strand under certain pressure and temperature, to make pipe
Material is connected as one.
6, high density polyethylene pipe line pressure testing inspection
High density polyethylene pipe pressure testing is leak test, and test medium uses air, test pressure 0.2Mpa, pressure maintaining
12h pressure drop is qualification no more than 1%.
7, high density polyethylene pipe liner
Liner operation is welded in high density polyethylene pipe and is completed, and is carried out after pressure testing is qualified.Debugging type undergauge respectively before liner
Machine, dragger to optimum state.Intert in high density polyethylene pipe and use " O " type compression method insertion lining recovery technique, is lining into
After main pipeline, high density polyethylene (HDPE) bushing pipe is adjacent to along caliber all directions even inflation until with main pipeline inner wall.High density is poly-
Ethylene tube is slowly dragged in pipeline through size reducing machine, and the feed speed of size reducing machine is slightly less than hauling speed.The fixation of dragger and pipeline
Problem takes secured, succinct convenient fixing means, dragger and pipeline is linked together.
8, connect outside weld connection in all fronts
After high density polyethylene pipe diameter restores, connector is connected using electric melting sleeve between two liner sections, and outer package uses steel
Pipe, intermediate annular section are filled using cement mortar.Covered with Angles pipeline section is that whole steel pipe is socketed flat welding process mode.
9, pressure testing is gone into operation
Pressure testing mode is depending on former pipeline, and can go into operation operation after qualified.
The Technology design uses modified thermoplastic high density polyethylene pipe, it can restore original physical after having deformation automatically
The characteristic of shape.The outer diameter of the liner high density polyethylene pipe of selection is identical with the internal diameter of Target pipe.When liner, allows and connect
High density polyethylene pipe pass through the idler wheel size reducing machine specially designed first.From the straight of the high density polyethylene pipe of size reducing machine out
Diameter will reduce 10% or so.The diameter high density polyethylene pipe smaller than main pipeline internal diameter, in certain tractive force and certain speed
It is easy to pull main pipeline under degree.After pulling force is cancelled, polyethylene pipe is slowly restored to original diameter, after a few hours inner tube with
Outer tube is tightly combined together.
This technology has the following characteristics that
1, HTPO tubing chemical stability is fabulous, and the factors such as general acid, alkali will not all make it corrode or damage, will not
It breeds bacterium, microorganism or fouling to get rusty, tubing itself is nontoxic.
2, excellent wear-resisting property: Germany is managed with the water respectively containing 7 ﹪ and 14 ﹪ quartz sands to HTPO and steel pipe carries out
Wear test, the results showed that, the wearability of HTPO pipe is 4 times of steel pipe.
3, the coefficient of frictional resistance of HTPO pipe is minimum, reaches identical feed flow, and the internal diameter of HTPO pipe only needs new stainless
96 ﹪ of steel pipe, 93.6 ﹪ of ductile iron pipe, 90.7 ﹪ of pipe of cement.
4, pipeline overall performance is good, reliable in quality.HTPO pipe is a kind of modified thermoplastic material, and this material has good
Good physicochemical characteristics, especially has wearability outstanding, and service life is up to 20 years or more.
5, no-dig technique in-situ immobilization can avoid the influence to urban transit system, building and Special section.
6, the various texture pipelines such as cast iron pipe, pipe of cement, the steel pipe of this technology suitable for φ 76mm- φ 600mm.It can be extensive
Ground is applied to natural blow-off line, gas pipeline, oil pipeline, filling pipe, pressure piping and all types of industries pipeline, sea
The anti-corrosion and reparation of bottom pipeline.
7, it is an entirety after electric melting sleeve and the welding of both ends internal lining pipe, eliminates the easy of conventional method and loosen and easily-deformable wind
Danger, stability are extremely strong.
8, annular section is filled using high strength cement mortar material, can be provided high-intensitive pressure-bearing after solidification for internal lining pipe and be protected
Barrier.
9, outside steel pipe is socketed welding using the whole section of steel pipe that thickness is greater than former pipeline, provides secondary pressure-bearing for internal lining pipe and protects
Barrier and exterior protection.
Example given above is to realize that the utility model preferably example, the utility model is not limited to above-mentioned implementation
Example.Those skilled in the art according to the technical characteristic of technical solutions of the utility model made it is any it is nonessential addition,
Replacement, belongs to the protection scope of the utility model.
Claims (9)
1. a kind of high-density polytene pipeline liner repairs structure, which is characterized in that including pipeline section to be repaired (1), liner pipeline section (2)
With surrounding layer (9)；
The outside wall surface of described liner pipeline section (2) one end close to pipeline section to be repaired (1) inner wall, and along pipeline section to be repaired (1) axially prolong
It stretches, is connected between the liner pipeline section (2) by interconnecting piece (8)；
Filled layer (6) are equipped between the surrounding layer (9) and liner pipeline section (2), the cutting of surrounding layer (9) and pipeline section to be repaired (1)
Face welding.
2. a kind of high-density polytene pipeline liner repairs structure according to claim 1, which is characterized in that the internal lining pipe
Section (2) is high density polyethylene pipe.
3. a kind of high-density polytene pipeline liner repairs structure according to claim 2, which is characterized in that the filled layer
(6) it is filled by cement mortar.
4. a kind of high-density polytene pipeline liner repairs structure according to claim 3, which is characterized in that the surrounding layer
It (9) include outside steel pipe (4) and reduced pipe (3), the slot end of cut end welding reduced pipe (3) of the pipeline section (1) to be repaired, institute
The wide mouth part and outside steel pipe (4) for stating reduced pipe (3) weld.
5. a kind of high-density polytene pipeline liner repairs structure according to claim 4, which is characterized in that the Covered with Angles
It is external that the whole steel pipe socket of pipe (4) is welded in the interconnecting piece (8).
6. a kind of high-density polytene pipeline liner repairs structure according to claim 5, which is characterized in that the interconnecting piece
It (8) include the electric melting sleeve (5) for being set in two liner pipeline section (2) junctions.
7. a kind of high-density polytene pipeline liner repairs structure according to claim 3, which is characterized in that the surrounding layer
It (9) include steel bushing pipe bend (7) and reduced pipe (3), the cut end of the pipeline section (1) to be repaired welds the slot end of reduced pipe (3),
The wide mouth part of the reduced pipe (3) and steel bushing pipe bend (7) are welded.
8. a kind of high-density polytene pipeline liner repairs structure according to claim 7, which is characterized in that the interconnecting piece
It (8) include elbow (10) and the electric melting sleeve (5) for being set in elbow (10) both ends Yu liner pipeline section (2) junction.
9. a kind of high-density polytene pipeline liner repairs structure according to claim 8, which is characterized in that the elbow
It (10) is high density polyethylene (HDPE) elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821898784.4U CN209196400U (en) | 2018-11-19 | 2018-11-19 | A kind of high-density polytene pipeline liner reparation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821898784.4U CN209196400U (en) | 2018-11-19 | 2018-11-19 | A kind of high-density polytene pipeline liner reparation structure |
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| CN209196400U true CN209196400U (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762273A (en) * | 2021-01-07 | 2021-05-07 | 中国石油天然气集团有限公司 | Special-shaped B-shaped sleeve for repairing oil and gas conveying pipeline bent pipe defects and machining method thereof |
-
2018
- 2018-11-19 CN CN201821898784.4U patent/CN209196400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762273A (en) * | 2021-01-07 | 2021-05-07 | 中国石油天然气集团有限公司 | Special-shaped B-shaped sleeve for repairing oil and gas conveying pipeline bent pipe defects and machining method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 453400 No. 266, Kuangcheng Road, Changyuan City, Xinxiang City, Henan Province Patentee after: Henan tefang Construction Group Co.,Ltd. Address before: 453400 intersection of Hongli Avenue and Wenhua Road, Changyuan County, Xinxiang City, Henan Province Patentee before: HENAN PROVINCE SPEICAL ANTICORROSION Co.,Ltd. |
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| CP03 | Change of name, title or address |